Well, the transmitter seems light enough plastic to pay attention anyway, I put only 9 because of this, even if the value is excellent. Otherwise the receiver is oddly hefty, but so much the better, I will not grumble
The usage is a bit special is for a digital accordion, suddenly I had sent an email to Sennheiser France to be sure to use it, yeah, since it is rather to scratch I did not want to end up with a gain difficult or impossible to resolve. Well not only I had a quick reply and telling me that I should not meet with worry, and finally because it works great!
So to gain line digital instrument you can go!
I have not tested the range to the extreme, but for a great scene I had no break, and the batteries seem to take quite some time.